Hi, I was planning to visit Eagles Nest (with Dokumentation Centre + bunkers) in mid -June. Ordinarily I would have taken the guided tour , since I am keen on the historical context - but sticking to fixed tour timings (4 hours) seems to restrict my options for the rest of the day + i would like to do the Dok part at my own pace. So , I am wondering whether to do the EN trip on my own ? I know audio guides are available for the Dok, anything similar for the actual Kehlsteinhaus? If not , is that a major issue ?